<?php
/** Copyright (c) 2010, Sudheera Satyanarayana - http://techchorus.net, 
     Binary Vibes Information Technologies Pvt. Ltd. and contributors
 *  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 *   * Redistributions of source code must retain the above copyright notice,
 *     this list of conditions and the following disclaimer.
 *
 *   * Redistributions in binary form must reproduce the above copyright notice,
 *     this list of conditions and the following disclaimer in the documentation
 *     and/or other materials provided with the distribution.
 *
 *   * Neither the names of Sudheera Satyanarayana nor the names of the project
 *     contributors may be used to endorse or promote products derived from this
 *     software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * 
 */

class Core_Model_Variable extends BV_Model_Essential_Abstract
{
    /**
     * The name of the variable
     */
    protected $_variable;

    /**
     * Set the variable 
     */
    public function __construct($variable = null)
    {
        if (isset($variable)) {
            $this->_variable = $variable;
        }
        parent::__construct();
    } 
 
    /**
     * Set the variable name
     * @param string $variable
     */
    public function setVariable($variable)
    {
        $this->_variable = $variable;
        return $this;
    }


    /**
     * @return the value of the variable
     */
    public function getValue()
    {
        return $this->db->fetchOne('SELECT value FROM variable WHERE name = ?' , $this->_variable);
    }     

    /**
     * Save a variable
     *
     * @param string $variable the variable name
     * @param string $value the value of the variable
     * @return void
     */
    public function save($variable, $value)
    {
        $db = Zend_Registry::get('db');
        $result = $db->fetchOne("select name from variable where name = ?", $variable);

        $data = array(
            'name' => $variable,
            'value' => $value,
        );

        if ($result) {
            
            $where[] = "name = '" . $variable  . "'";
            $db->update('variable', $data, $where);
        } else {
            $db->insert('variable', $data);
        }
    }

}
